From patchwork Thu Jul 4 09:34:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhao Liu X-Patchwork-Id: 1956757 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=lmi0LTQ8; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4WFB1Y3bYXz1xpP for ; Thu, 4 Jul 2024 19:19:45 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sPIc0-0006NC-7C; Thu, 04 Jul 2024 05:18:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sPIbu-0006MK-Ea; Thu, 04 Jul 2024 05:18:38 -0400 Received: from mgamail.intel.com ([198.175.65.16]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sPIbr-0001br-0q; Thu, 04 Jul 2024 05:18:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1720084715; x=1751620715; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=2yWda5+RJ5YHltmBgTNQsmoOCifxWuqxZL3/wnZPkyo=; b=lmi0LTQ8FKeeAA07jXM2Pcci3CFZSV3rR6dheE8TIhFTJTSi6rmkfw8q 2+pz6lEfV7VPEhI7mjjeEeddV4O2lyKyam00oBuK4FpM4B3l64S/GdMgz lUE6HqTbA6uwu8eBSCKcMzxr80iv52h1QiqVcun38puqXdn0stAfdZoNF oQIOZIPRWCUtn4+A8jwCL7M1gGfSYhnYKI2RO6PMRrDnzy6UKzWJkLWY6 DCVPOzmI9DP23AExNx6T+odzbgDjbfq3/6+0IXGG1tfYmVUZKd09ZrrRN y692zW6S6s+V6+5KU0CZmCHQMrPuY5D4XZTvCe4CHCyODVh0zrNMKUNd6 A==; X-CSE-ConnectionGUID: /zi5M0lRTRCNrEC2DGVo1g== X-CSE-MsgGUID: 6x2jhHUdRQ6fKIzbYHeVjA== X-IronPort-AV: E=McAfee;i="6700,10204,11122"; a="17487617" X-IronPort-AV: E=Sophos;i="6.09,183,1716274800"; d="scan'208";a="17487617" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Jul 2024 02:18:31 -0700 X-CSE-ConnectionGUID: wKOGwyB6QpWVKu8euJf57Q== X-CSE-MsgGUID: f6mIF49JR16jMnM5i269TA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,183,1716274800"; d="scan'208";a="50863190" Received: from liuzhao-optiplex-7080.sh.intel.com ([10.239.160.36]) by fmviesa003.fm.intel.com with ESMTP; 04 Jul 2024 02:18:29 -0700 From: Zhao Liu To: Jonathan Cameron , Fan Ni Cc: qemu-devel@nongnu.org, qemu-stable@nongnu.org, Zhao Liu Subject: [PATCH] hw/cxl/cxl-host: Fix guest crash when getting cxl-fmw property Date: Thu, 4 Jul 2024 17:34:04 +0800 Message-Id: <20240704093404.1848132-1-zhao1.liu@linux.intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Received-SPF: none client-ip=198.175.65.16; envelope-from=zhao1.liu@linux.intel.com; helo=mgamail.intel.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Zhao Liu Guest crashes (Segmentation fault) when getting cxl-fmw property via qmp: (QEMU) qom-get path=machine property=cxl-fmw This issue is caused by accessing wrong callback (opaque) type in machine_get_cfmw(). cxl_machine_init() sets the callback as `CXLState *` type but machine_get_cfmw() treats the callback as `CXLFixedMemoryWindowOptionsList **`. Fix this error by casting opaque to `CXLState *` type in machine_get_cfmw(). Fixes: 03b39fcf64bc ("hw/cxl: Make the CXL fixed memory window setup a machine parameter.") Signed-off-by: Zhao Liu --- hw/cxl/cxl-host.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/hw/cxl/cxl-host.c b/hw/cxl/cxl-host.c index c5f5fcfd64d0..e9f2543c43c6 100644 --- a/hw/cxl/cxl-host.c +++ b/hw/cxl/cxl-host.c @@ -315,7 +315,8 @@ static void machine_set_cxl(Object *obj, Visitor *v, const char *name, static void machine_get_cfmw(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { - CXLFixedMemoryWindowOptionsList **list = opaque; + CXLState *state = opaque; + CXLFixedMemoryWindowOptionsList **list = &state->cfmw_list; visit_type_CXLFixedMemoryWindowOptionsList(v, name, list, errp); }